Internal-combustion engine



Oct. 27,1925; v {1,558,885

G. HUNT INTERNAL COMBUSTION ENGINE Filed 0a.. a, 1924 I INVENTOR GEO/P65 HUNT ATTORNEY Patented Oct. 27, 19253 UNITED STATES PATENT OFFICE; v

GEORGE HUNT, or DETROIT, MICHIGAN, Assrenon r THE STUDEBAKER oonrona- TION, OF SOUTH BEND, INDIANA, A CORPORATION Ol NEW JERSEY.

INTERNAL-COMBUSTION ENGINE.

Application filed October 8, 1924. Serial No. 742,424.

To all whom it may concern:

Be it known that I, GEORGE HUNT, a citizen of the United States of America, and resident of Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification.

This invention relates to engine lubrication and particularly to that type commonly known as the splash system in which oil dips carried by the connecting rods dip into oil receiving troughs durin rotation of the crank shaft and splash the oil on to various operating parts and, in some cases, force oil through thedip to the crank pins;

An object of this invention is to provide a removable oil dip for a connecting rod.

Another object is to provide a removable oil dip for a connecting rod which is secured in place by the same bolts that hold the bearing cap in place.

Another object is to provide a connecting rod oil dip that is manufactured mainly of .2 sheet metal independently of the connecting rod and is removably secured thereto.

A further object is to provide a connecting rod oil dip composed of a sheet metal securing part provided with openings to receive the connecting rod bolts to secure it in place, and a central opening in which a tubular dip member is secured, the dip member projecting up through the securing part and into an opening inthe connecting rod cap leading to the bearing surface thereof,

The above being among the objects of the present inventlon, the same consists of certain features of construction andcombinations of parts to be hereinafter. de' scribed with reference to the accompan "ing drawing, and then claimed, having the a ove and other objects in view.

In the accompanying drawing which illustrates a suitable embodiment of the present invention, and in which like numerals refer to like parts throughout the several views,

Figure 1 is a sectional view taken transversely through an internal combustion engine in which the present invention'is embodied. k j,

Figure 2 is an enlarged partially broken view of the lower end of the connecting rod of the engine shown in Figure 1, the different parts being shown separated and in the position in which they are progressively assembled.

Figure 3 is a longitudinal section taken vertically through the assembled oil dip member. a

Figure 4 is a transverse section of the assembled oil dip member takenon the line 4-4 of Figure 3.

Figure 5 is a perspective view of the tubular dip portion only of the oil dip mem-- her.

The internal combustion engine shown in Figure 1 is of the conventional type having an oil pan 10, crank case 11, cylinder block 12 and cylinder head13, A cylinder liner 14 is received in the cylinder block 12 and projects down into the crank case 11, it being held in such position by a cen-, trally located outward peripheral flange which is clamped between the cylinder block 12 and crank case 11. A piston 15 adapted to reciprocate in the liner 14 is connected to the crank pin 16 ofthe crank shaft 17 byl means of the connecting rod 18. Suita y operated valves 19 are provided for controlling the entrance of combustible gas to and discharge of exhaust gas from the combustion chamber 20 through passages such as 21'. The lower or big endof the connecting rod 18is provided with a suitable cap 22 which extends'around half of the crank pin 16 and is secured to the connecting rod 18 by the bolts 23 and nuts 24. That portion of the connecting rod-18 and cap 22 which receives the crank in 16 is lined with asuitable bearing meta 25.

As is usual in constructions of this type, the lower part of the connecting rod cap is provided with an oil dip member which, upon rotation of the crank shaft, passes throu h troughs such as 26 provided in an oil sp ash pan 27 secured in the oil pan 10 immediately below and in line with the con necting rod 18. Oil supplied through a suitable pipe such as 28 discharges into the trough 26, and the connecting rod oil dip when passing through the trough 26 atan appreciable speed, splashes the 011 out of the trough and on to the various wearing surfaces within the engine, thereby lubricating the same.

It is in connection with such oil dips that this invention is involved and in the drawingis shown an oil dip embodying the present invention which is illustrated as consisting of two parts, namely, a securing part 29 and a dip member 30. The securing part 29 is preferably of sheet metal formed to match the lower face of the cap 22 which is preferably machined to present a better joint between the two parts, and is rovided with openings 31 to receive the olts 23. A central opening provided with a downwardly turned edge 32 is provided in the securing part 29 for closely receiving the dip member 30 which is preferably constructed from a tube the lower end of which is bent towards the direction of rotation of the crank pin 16 and is machined off to present a forwardly presented shovel face to better pick up the oil from'the trough 26. The dip 30 projects up through the securing part 29 and the forward and rear portions of this projecting part are separated from the tube along vertical lines each side of the center, forming attaching flanges 33 which are bent over outwardly into contact with the upper face of the securing part 29 and are preferably secured thereto by spot welding or by other suitable means. As shown in the drawing, that portion of the securing part 29 against which the attaching flanges 33 contact is preferably depressed below the upper face of the part 29 an amount equal to the thickness of the flanges 33 so that the upper surface of the part 29 and the lower face of the cap 22 will match perfectly along the edges throughout the entire len h of contact. An 0 enin 34 is provide in the ca- 22 leading rom its lower face to the cran pin bearin surface and the upper projecting end 0 the dip 30 is adapted to be received in this opening when the part 29 is secured to the cap 22.

In assembling this oil di to the connecting rod, the connecting ro 18, ca 22 and bolts 23 are assembled as usual'wit the exception that before the nuts 24 are threaded on to the bolts 23, the oil dip is slip ed over the bolts and up against the lower Ewe of the cap 22, the upper projecting end of the tubular member 30 belng received in the opening 34 and the bolts 23 passing through the openings 31 in the part 29, after which the nuts 24 are threaded home on the bolts 23, looking all of the parts securely in position. The

clearly shown in Figure 2.

It will be seen that in this construction, not only is oil splashed out of the trough 26 by the dip member 30 upon rapidly assing therethrough, but oil is also force up .hrough the dip member and opening 34 to the bearin surface of the crank pin 16. Further lu rication of the crank pin 16 is also provided by the use of opemngs Such as 35 in the connecting rod 18 immediately position of the different parts as progressively assembled is above the crank pin 16, which openings are provided to conduct pil splashed thereinto to the upper surface of the crank pin. 16 by gravity.

It will be apparent to those skilled in the art thatthe construction illustrated is particularly desirable from a production and service standpoint and in addition provides a most efficient design of oil dip from the viewpoint of lubrication.

Formal changes may be made in the specific embodiment of the invention described without departing from the spirit and substance of the broad invention, the scope of which is commensurate with the appended claims.

What I claimisz- 1. An oil dip member for attachment to a connecting rod cap comprising an attaching part and a dip portion, said attaching part comprising a sheet'metal member formed to match the lower face of said cap rovided with end openings matching the olt openings in said cap and a central opening, said dipping portion'extendin through said central opening and having anges secured to said attaching part.

2. An oil dip member for attachment to aconnecting rod ca comprising a sheet metal attaching part ormed to match a surface of said cap and provided with bolt receivin openings adjacent its ends and a centre 1y located 0 ning the metal about which is downward y flanged to form a collar, 'and an oil dip portion received and secured in said collar and projecting above I and below said part.

3. An oil di member for attachment to a connecting ro cap comprising an attaching part and a dip iprtion, said attaching part comprised o s set metal formed to match the lower face of said 'cap and provided .with end openin s forreceiving bolts and a central opening t e metal about which is downwardly flanged to form a collar, said dip portion comprising a tubular member received in said collar and projecting above and below the same, the

bent towards the direction of movement of said ca and a portion of the walls ofthe pzojectmg upper portion being outwardly nt to form flanges for securing said dip portion to said attachin part.

4. In combinatidn wit a connecting rod map provided with bolt a a portion comprising a tubular, member re- I v 7 ro ectiug lower part of said tubular mem r being ceived in the central opening in said attaching part and projecting above and below the same, the lower projecting portion being formed to provide a scoop face and the upper projecting portion being received in the centralopening in said cap to locate said part in respeotto said cap and being provided with outwardly bent portions to secure said dip portion to said attaching part.

5. The combination with an engine provided with a crank shaft, a connecting rod and 'cap having crank sh'aft bearing surfaces, screw means for holding said cap to said, rod, and an oil containing trough .adjacent the lowest 0 erative position of said cap, of means for ubricating said bearing surfaces comprising an opening in said cap leading from said bearing surface'to an ex terior face thereof, a sheet metal member provided, with an opening matchlng said opening in said cap formed toi match said face and clamped thereagainst by said screw means, and a hollow scoop member received in said opening in said member and secured thereto by flanges on said scoop,-

said scoop projectingabove and below said Si ed by me at Detroit Michigan S. A g; a 7 I s 6th day of October, 1924.

' GEORGE'HUNT. 

